to typescript

.gitignore

@@ -1,2 +1,5 @@
 node_modules
-tmp
+tmp
+*.js
+*.d.ts
+!types/

lib/entry.ts

@@ -0,0 +1,64 @@
+const DIRECTORY_MODE = 16877;
+
+import fs = require('fs');
+export interface BaseEntry {
+  relativePath: string;
+  isDirectory() : boolean;
+}
+
+export interface DefaultEntry extends BaseEntry {
+  relativePath: string;
+  mode?: number;
+  size?: number;
+  mtime?: number | Date; // All algorithms coerce to number
+  isDirectory() : boolean;
+}
+
+export default class Entry implements DefaultEntry {
+  relativePath: string;
+  mode?: number;
+  size?: number;
+  mtime?: number | Date; // All algorithms coerce to number
+
+  constructor(relativePath:string, size?:number, mtime?: number | Date, mode?: number) {
+    if (mode === undefined) {
+      const isDirectory = relativePath.charAt(relativePath.length - 1) === '/';
+      this.mode = isDirectory ? DIRECTORY_MODE : 0;
+    } else {
+      const modeType = typeof mode;
+      if (modeType !== 'number') {
+        throw new TypeError(`Expected 'mode' to be of type 'number' but was of type '${modeType}' instead.`);
+      }
+      this.mode = mode;
+    }
+
+    if (mtime !== undefined) {
+      this.mtime = mtime;
+    }
+
+    this.relativePath = relativePath;
+    this.size = size;
+  }
+
+  static isDirectory(entry: Entry) {
+    if (entry.mode === undefined) {
+      return false
+    } else {
+      return (entry.mode & 61440) === 16384
+    }
+  }
+
+  static isFile(entry: Entry) {
+    return !this.isDirectory(entry);
+  }
+
+  static fromStat(relativePath: string, stat: fs.Stats) {
+    return new this(relativePath, stat.size, stat.mtime, stat.mode);
+  }
+
+  isDirectory() {
+    return (this.constructor as typeof Entry).isDirectory(this);
+  }
+};
+
+